Friction and stop clutch.



No. 644,046. Patented Ian. 9, 1900. H. E. SHARP.

FRICTION AND STOP CLUTCH.

(Application filed Kay 25, 1899.) (No Model.)

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HENRY E. SHARP, OF NEWARK, NEW JERSEY.

SPECIFICATION forming part of Letters Patent No. 641,046, dated January 9, 1900.

Application filed May 25, 1899- Serial No. 718,166. (No model.) 7

To ctZZ whom it may concern:

3e it known that I, HENRY E. SHARP, a citizen of the United States, residing at Newark, in the county of Essex and State of New J ersey, have invented certain new and useful Improvementsin Friction and Stop Clutches, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to a friction-clutch and detaching and stop mechanism therefor.

The object of the invention is to produce a shaft-driving clutch which shall engage easily and without shock with the driven mechanism and which can be uncoupled by the same mechanism which acts as a brake to stop the shaft.

Figure 1 is a partial plan and partial section of the essential parts of the mechanism of this clutch. Fig. 2 is a section of the clutch members, showing details of the mechanism sufficient to indicate the operation of the de vice. Fig. 3 is an end View of elevation of one of the clutch-pulleys and the detachingbutton. Fig. 4 is a diagram of the detaching-button.

A indicates a driving-shaft for any light machine and is especially adapted for use in a cigar-machine. The shaft may be of any desirable length and supported in'any usual bearings, as B.

C indicates a pulley or disk which is firmly fixed to the shaft, as by set-screw D passing through the integral hub E and locking this pulley or clutch member to the shaft. The pulley or clutch member 0 has a frusto-conical rim or periphery, as shown in the drawings and as common in friction-clutches.

The cup member F of the clutch is loose on shaft A, but is driven by suitable power-as,

, for instance, by belt G, which belt may run have the members in frictional engagement, when the power which drives part F will cause the part 0 and the shaft to rotate.

On the integral hub E of pulley 0 there is a flatted side, on which the uncoupling or crank lever K is mounted by a pivot L. This crank-lever can rock on its pivot, so that one of its arms projects through mortise N in the pulley C, but when not so rocked will be pressed back by the spring-pressed cup, allowing the, clutch members to close together under the impulse of the spring H.

A detaching or detent lever O is pivoted in proximity to the hub E of the clutch member C, said lever 0 being suitably pivoted on the frame. Then the free end of lever O is swung into the path of movement of the outer arm of lever K, this lever K will be swung on its fulcrum and one of its arms will be rocked through mortise L of the clutch member 0, and so bear against the face of the cup member F, pressing the same back out of contact with member 0. At the same time the lever 0 serves as a stop to prevent further rotation of the pulley (J. Thus the shaft may be stopped instantly by means of the lever 0,

the uncoupling being effected by the same movement.

The shaft 0 may be rocked by engagement with a cam P on a counter-shaft Q, said counter-shaft having an operating-handle R and being preferably parallel with shaft A, as shown, in bearings B B. The partial rotation of shaft Q causes cam P to rock lever 0 into position to engage the crank or uncoupling lever'K and to stop the machine by the uncoupling-lever remaining in contact with this detaching or detent lever 0. To permit the machine to again start, it is only neceshub, and means to rock said rocking lever so that one of its arms projects through an opening in one clutch member and presses the two clutch members apart, all combined substantially as described.

2. In a clutch, the shaft, the disk 0 attached to the shaft and having a mortise therein, a lever mounted on the disk in position to swing through the mortise, the driven cup F loose on the shaft, means for pressing the clutch members into frictional contact, and a stop movable into position to rock the said lever and disconnect the clutch,and simultaneously to stop the shaft, substantially as described.

3. In a clutch, the clutch member loose on Witnesses:

A. M. CARD, K. CRUGER. 

